Scraping and grading machine



3 Sheets- -Sheet *1.

(No Model.)

J. W. DENTONQ SORAPING AND GRADING MAGHINE.-

-No.-448',415. Patented Mar. 17,1891;

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3 Sheets-Sheet. 2. J. W. DENTON. SGRAPING AND GRADING MACHINE.

Patented Mar. 17, 1891.

(No Model.) 3 Sheets'-Sheet. 3.

J. W. DENTON.

SORAIING AND GRADING MACHINE. No. 448.415. Patented Mar. 17,1891" 'Wlu ;...139;

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"PATENT trier,

JARET IV. DENTON, OF HENDERSON, KENTUCKY.

SCRAPING AND GRADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 448,415, dated March 17, 1891.. Application filed June 21,1890. Serial No. 356,273. (No model.)

To 0/ whom, it may concern:

I 3e it known that I, JARET W. DENTON, a citizen of the United States, residing at Hen- .derson, in the county of Henderson and State of Kentucky, have invented a new and useful Scraping and Grading Machine, of which the following is a specification.

This invention has relation to scraping and grading machines; and the objects of the invention are to increase the capacity of the machine without correspondingly increasing the necessary power for operating the same, and to provide withal a cheap and simple construction adapted to take up the dirt in convenient quantities, transport the same to a desired point, and simultaneously dump all of the scrapers or shovels.

Other objects and advantages of the invention, together with the novel features thereof, will appear in the following description and be particularly pointed out in the claims.

Referring to the drawings, Figure l is a plan of a machine constructed in accordance with my invention. Fig. 2 is a side elevation. Fig. 3 is a vertical longitudinal section. Fig. 4 is Fig. 5 is a similar section in front of the drive-chain. Fig. 6 is a perspective of one of the scrapers.

Like numerals of reference indicate like parts in all the figures of the drawings.

1 represents an oblong frame, consisting of opposite side bars 2, connected at their opposite ends by end bars 3. In the front end bar is pivoted the front axle 4, having the ground-wheels 5, and in the side bars 2 near their rear ends is the rear axle 6, having the ground wheels 7, larger than the groundwheels 5, and one of said ground-wheels 7 is provided with a sprocket-wheel 8 fast thereto. At intervals the upper edges of the side bars 2 are provided with pairs of opposite boxes 9, and in each pair of boxes is mounteda transverse shaft 10, having a centrally-cranked portion 11, extending the entire width of the frame 1, and outside of one of said boxes each of the shafts is bent to form an operating 1ever or crank 12, which lever is disposed at a substantial right angle to the cranked portion 11, aforesaid. The side bar 2, at which is located the levers 12, is provided with a shelf 13, and said levers when in a horizontal position lie thereupon.

Upon each of the erankshafts 10, at their intermediate cranked portions, is suspended a U-shaped hanger let, said hangers being slotted or provided with openings at their upper ends for the loose passage therethrough of the shafts. Brackets 15 project from the opposite sides or terminals of the hangers near their lower portions, and in the ends of the brackets are pivoted, as at 16, the opposite sides of the shovels or scrapers 17, so that said shovels or scrapers are free to tilt.

A pair of bars 18 depend from the side rails 2 near their front ends, and a similar pair of bars 18 depend from said rails near their rear ends, and said bars are connected loosely by means of a chain 19, one arranged at each side of the machine. The front edges of the scrapers or shovels are sharpened, and the side walls have connected therewith pairs of short chains 20, the opposite ends of the chains each being connected to the longitudinal chains 19, just mentioned.

Secured to the bars 2 at intervals are pairs of standards 21, each pair being connected by a cross-bar 22, and upon said cross-bars is supported a pair of longitudinal bars 23, which at intervals, corresponding with the number and location of the shovels, have journaled therebetween pulleys 24:. The rear pair of bars 22 is extended beyond the standards 21 at that side of the machine at which is located the sprocket-Wheel 8, and is connected by a cross-bar 26. In the bar 26 and the bar 23 is journaled a shaft 27, carrying a sprocket 28, said sprocket having a toothed sleeve 29, which, together with the sprocket, is rigid with the shaft. At one side of the sleeve 29 there is loosely mounted upon the shaft a drum 30, provided at its inner side with a toothed hub 31, adapted to engage the sleeve 29, and at its opposite side with a grooved brake-Wheel In the groove of the brakewheel operates a lever 33, which is pivoted, as at at, to the rear bar 22. By means of this lever the toothed hub of the drum 30 may be thrown into and out of connection with the sleeve 20, and said lever may also be employed as a brake-lever. The sprocket 28 is connected to the sprocket 8, by which it is driven, by means of a sprocket-chain 34. An

endless rope or cable 35 iswound upon the drum 30 andover and under each of the pulleys 24, and in rear of each pulley short chains or cables 36 are connected to the chain or cable 35, and have their lower ends connected to the rear walls of the scrapers or shovels. These short cables are slack, so as to permit of a raisingand lowering of the shovels or scrapers into and'out of contact with the ground without in any way interfering with such movements. At alternate sides of the crank-shafts are loosely pivoted push bars 257, said latches extending to the rear and resting upon the next succeeding crank-shaft, as shown, and have their under sides at their rear ends shouldered or recessed, as at 38.

The operation of the invention is as follows: The machine being started, the first lever 12 is thrown to the rear, which lowers the first scraper of the series, and the edges of the scraper to a proper position for scraping, the short draft-chains serving to limit the rearward swing of the scrapers or shovels. When the first shovel or scraper has become filled, the lever 12 is thrown to the front and the push-bar pivoted thereto, the shoulder of which rests against the front portion of the shaft immediately in rear thereof, and serves to move said shaft to the rear beyond thevertical center of its bearing, whereby the second shovel drops to the scraping position. In its movements the push-bar is guided by a guidebracket 39, having a guide-slot in its upper end in which the latch reciprocates. When the second shovel has become filled, the op-' erator throws the lever'12 thereof to the-front, and the push-bar of said shaft serves in a similar manner to lower the third shovel, and so on until the entire series of shovels are filled and raised. The machine is now driven to the dumping-ground and the lever 33 shifted so as to throw the drum 31 into operative connection with the sleeve 29 of the sprocket 25. The drive-chain 34 operates the sprocket 35 and drum 31, which in turn moves the endless chain or cable 35 and partially winds the short cables 36, and said cables tilt the rear ends of the shovels and dump their contents while the machine is in motion. The edges of the shovels coming in contact with the several hills of dirt serve to level the same, as will be apparent. When the short cables 36 have been sufficiently tilted to accomplish the dumping, the lever 33 is shifted and the shovels automatically returned toa horizontal position, their rear ends being the heaviest by reason of the point of pivot beingin advance of the centers. \Vhen tilted for the purpose of dumping,'the short ropes 36 are drawn partially over the drums 24 in front thereof, so that when the lever 33 is returned and the rope 36 liberated the weight of the shovels is which is equal to two or three ordinary 1naof. horse-power.

chines, and yet requires but the same amount It will be seen that but one shovel is actuallyscrapingat a time, and the machine may therefore be drawn very readily by two horses, and the entire series of filled shovels may also be drawn by the two horses to the dumping-grounds. The capacity, therefore, of the machine is double that of the ordinary scraper, and without the proportionate increase in attendance and horse-power. It will be apparent that the number of shovels or scrapers may be indefinitely increased, as desired.

Having thus described my invention, what I claim is 1. In a road-scraper, the combination, with an oblong frame, of a series of shafts mounted therein and terminating at their outer ends in operating-levers, a series of U-shaped trally-cranked portions thereof, and a series of scraping-shovels supported in the lower ends of the hangers, substantially as specified.

2. In a road-scraper, the combination,with an oblong frame, of a series of shafts having centrally-cranked portions journaled in the frame and having their ends bent at a right angle to the cranked portion to form an operating-lever, a shelf or rest secured to one of the sides of the frame for the support of the levers, U-shaped suspension-hangers loosely mounted in the cranked portions of the shafts, and scraping-shovels secured in each of said hangers, substantially as specified.

3. In a road-scraper, the combination,with an oblong frame provided at intervals with opposite pairs of bearings, of a series of shafts mounted in the bearin gs and having centrallycranked portions and terminating at their outer ends" in operating arms or levers, U-

shaped hangers loosely suspended from the centrally-cranked portions and provided with foiwvardly-disposed brackets near their lower ends, a series ofscraping-shovels mounted in the brackets, draft-chains extending longitudinally along the sides of the shovels, depending standards for supporting the same, and a series of pairs of short chains connected at their ends to the front ends of the shovels and at their opposite ends to the draft-chains, substantially as specified.

4. In a road-scraper, the combination, with an oblong frame provided at intervals with bearings, of a series of shafts mounted in the bearings, cranked between their bearings, and

provided with an operating-arm at one side of their bearings, U shaped suspension-straps loosely mounted on the cranked portions, scraping-shovels pivoted .in the straps, and push-bars pivotally mounted upon each of the shafts and rearwardly extending and loosely connected with the next succeeding shaft, substantially as specified.

5. I In a road-scraper, the combination, with an oblong frame having a series of pairs of bearings, of a series of shafts mounted in the bearings and having centrally-cranked porhangers mounted upon the shafts upon centions between the bearings-and outside of the same, terminating in arms at substantially right angles to the cranked portions, guidebrackets located in rear of each of the shafts, and push-bars provided with shoulders pivoted to each of said shafts and projecting in rear and taking against the next succeeding shaft and mounted in the brackets, substantially as specified.

6. In a road-scraping machine, the combination, with an oblong frame and a series of suspension-hangers provided with pivoted scraping-blades, of a series of pulleys mounted above and corresponding with the scraper or shovels, a drum, the shaft of the same, driving connections between the shaft and the ground-wheels of the machine, an endless belt or cable Wound upon the drum and passing over and under each of the pulleys, a series of cables connecting the endless belt or cable with each of the shovels at their rear ends, and means for throwing the drum into and out of operative connection with the ground-Wheel, substantially as specified.

7. In a road-scraper, the combination,with the oblong frame, the series of U-shaped suspension-hangers, and the scraping-shovels pivoted thereto, of the series of pulleys, an endless chain connecting the same and short chains connecting said chain to the shovels, 0

and means for operating said endless chain and simultaneously tilting the shovels, substantially as specified.

8. In a road-scraping machine, the combination, with the oblong frame, of the series of crank-shafts, the U-shaped suspension-hangers provided at their front edges with brackets, and the shovels pivoted in the brackets in front of their centers, the standards 21, cross-bars 22, the rear two of which are eX- tended beyond the standards, the connectingbars 23 and 26, the axle 6, ground-wheels 7, one of Which is provided with the sprocketgear 8, the loose pulleys 24, arranged over the shovels in the side bars 23, the shaft 27, the gear-wheel 28, the chain 34:, connecting the gear-wheel with the sprocket-gear 8, the drum 30 for engaging the toothed sleeve 29 of the sprocket 28,'and the grooved brake-pulley 32 and the lever 33 for shifting the same, substantially as specified.

In testimony that I claim the. foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JARET W. DENTON.

WVitnesses:

PHILIP LEVY, EVANS F. JOHNSON. 

